Textbook Question
Show how you would accomplish the following transformations. You may use any additional reagents you need.
(c)
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Ch.10 - Structure and Synthesis of Alcohols
Wade9th EditionOrganic ChemistryISBN: 9780135213728
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Table of contents
- Ch.1 - Structure and Bonding107
- Ch. 2 - Acids and Bases; Functional Groups115
- Ch.3 - Structure and Stereochemistry of Alkanes100
- Ch.4 - The Study of Chemical Reactions99
- Ch.5 - Stereochemistry93
- Ch.6 - Alkyl Halides; Nucleophilic Substitution118
- Ch. 7 - Structure and Synthesis of Alkenes; Elimination158
- Ch.8 - Reactions of Alkenes171
- Ch.9 - Alkynes91
- Ch.10 - Structure and Synthesis of Alcohols143
- Ch.11 - Reactions of Alcohols104
- Ch. 12 - Infrared Spectroscopy and Mass Spectrometry22
- Ch. 13 - Nuclear Magnetic Resonance Spectroscopy45
- Ch. 14 - Ethers, Epoxides, and Thioethers72
- Ch. 15 - Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy89
- Ch. 16 - Aromatic Compounds74
- Ch. 17 - Reactions of Aromatic Compounds126
- Ch. 18 - Ketones and Aldehydes193
- Ch. 19 - Amines129
- Ch. 20 - Carboxylic Acids77
- Ch. 21 - Carboxylic Acid Derivatives141
- Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds175
- Ch. 23 - Carbohydrates and Nucleic Acids93
- Ch. 24 - Amino Acids, Peptides, and Proteins54
Chapter 10, Problem 40b
Show how you would accomplish the following transformations. You may use any additional reagents you need.
(b) 
Verified step by step guidance1
Step 1: Recognize the functional group transformation. The starting material contains a thiol group (-SH), and the product contains a sulfonic acid group (-SO₃H). This indicates that the thiol group needs to be oxidized to a sulfonic acid.
Step 2: Select an appropriate oxidizing agent. Common oxidizing agents for thiols to sulfonic acids include hydrogen peroxide (H₂O₂) in acidic conditions or potassium permanganate (KMnO₄). These reagents can facilitate the oxidation of the thiol group.
Step 3: Set up the reaction conditions. For example, if using H₂O₂, the reaction can be carried out in an acidic medium such as dilute sulfuric acid (H₂SO₄) to ensure the formation of the sulfonic acid group.
Step 4: Perform the oxidation reaction. The thiol group (-SH) undergoes sequential oxidation steps: first to a sulfenic acid (-SOH), then to a sulfinic acid (-SO₂H), and finally to a sulfonic acid (-SO₃H). Ensure the reaction proceeds to completion.
Step 5: Purify the product. After the reaction, isolate the cyclohexanesulfonic acid by techniques such as recrystallization or extraction, depending on the reaction medium used.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Thiol Chemistry
Thiol compounds, characterized by the presence of a sulfhydryl group (-SH), are analogous to alcohols but contain sulfur instead of oxygen. They can undergo various chemical transformations, including oxidation, where the thiol group can be converted into sulfonic acids. Understanding the reactivity of thiols is crucial for predicting the products of their transformations.
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The mechanism of Sulfide Synthesis.
Oxidation Reactions
Oxidation reactions involve the loss of electrons or an increase in oxidation state, often resulting in the formation of more oxidized products. In the case of thiols, oxidation can lead to the formation of sulfonic acids, which are highly polar and soluble in water. Recognizing the types of reagents that facilitate oxidation, such as hydrogen peroxide or peracids, is essential for performing these transformations.
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Sulfonic Acids
Sulfonic acids are organic compounds containing a sulfonyl group (-SO3H) attached to a carbon atom. They are strong acids and are often used in various applications, including as intermediates in organic synthesis and as surfactants. Understanding their properties and how they are formed from thiols through oxidation is key to mastering organic transformations involving sulfur-containing compounds.
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Related Practice
Textbook Question
Show how you would use Grignard syntheses to prepare the following alcohol from the indicated starting material and any other necessary reagents.
(e) benzyl alcohol (Ph–CH2–OH) from bromobenzene (Ph–Br)
672
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Textbook Question
Show how you would accomplish the following transformations. You may use any additional reagents you need.
(d)
1592
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Textbook Question
Show how you would use Grignard syntheses to prepare the following alcohol from the indicated starting material and any other necessary reagents.
(d) 2-cyclohexylethanol from bromocyclohexane
616
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Textbook Question
Show how you would use Grignard syntheses to prepare the following alcohol from the indicated starting material and any other necessary reagents.
(g) cyclopentylphenylmethanol from benzaldehyde (Ph–CHO)
602
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Textbook Question
Show how you would synthesize the following:
a. 2-phenylethanol by the addition of formaldehyde to a suitable Grignard reagent
2039
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